Means for feeding preheated air.



APPLIUATION FILED FEB. 20, 1913.

Patented Nov. 24, 1914.

IIVVENTOI? WI T/VESSES ATTORNEY.

y the chambers.

"if TED I STATES PATENT OFFICE;

GERRI'I' VAN DAAM, OFBUFFALO, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNIVERSAL COMBUSTION COMPANY, INC., A CORPORATION OF NEW YORK.

MEANS FOR FEEDING PREHEATED AIR.

Application filed February 20, 1913.

To all whom it may concern:

Be it known that I, Gnnurr VAN DAAM, a citizen of the United States, residing, at Buffalo, in the county of Erie, State of New York, have invented a new and useful Means for Feeding Preheated Air, of which the following is a specification.

My invention relates to improvements in means for feeding pro-heated air to the combustion chamber of stoves and furnaces.

The object is to provide improved means for introducing air from the outside atmosphere through tortuous or convolute passages having large heating surfaces exposed to the influence of the heat of the combustion chamber.

Referring to the drawings, which illustrate merely by way of example, suitable means for effecting my invention Figure 1 is a plan view of the top of a stove lid by which my invention, by way of example, is applied. Fig. 2 is a bottom view of same. Fig. 3 is a vertical section on the line 3-3 of Fig. 1. Fig. 4 is a vertical section on the line 4 --4r of Fig. 2. Fig. 5 is a plan view of the corrugated member of the lower section. Fig. 6 is a bottom view of the corrugated member of the upper section.

Similar numerals refer to similar parts throughout the several views.

My device is especially adapted to be used in connection with the closure of the combustion chamber. It is shown in the present invention illustrated in the drawings as a stove lid, the top plate of which is indicated by the numeral 8. This member 8 is provided with the downwardly extending flange 9 and, at a point nearits outer circumference, is provided with the air intake aperture 10. The second hollow body 11 of corresponding periphery with that of the flange 9 is adapted to be bolted against the flange 9 with an interposed partition 12, separating into two compartments the space between the top of lid 8 and the bottom of body 11.

In the upper chamber 13 is provided a corrugated member 14, and in the lower chamber 15 is provided the corrugated member 16. These members, at their angles, are adapted to form a substantially air-tight engagement with the upper and lower walls of The several elements are se- Speeification of Letters Patent.

Patented Nov; 24:, 1914.

Serial No. 749,582.

cured together by the bolts 17, or other suitable means.

The corrugated members are apertured at alternate ends so that the air passing, for example, through 10 into channel 18, is delivered from said channel 18 at one end thereof, as through aperture 19, into the next adjoining channel where it travels to the other end and is delivered through aperture 20 to the next adjoining channel, and so on, backward and forward through the several channels of the upper chamber, and is then delivered through aperture 21 into channel 22 of the lower chamber, and thence backward and forward through the several channels to be discharged through the series of discharge apertures 23, into the combustion chamber.

It will thus be seen that a very long tortuous passage is provided from the intake opening 10, to the discharge openings 23, thereby securing an extremely efficient heating of the air before it is delivered to the combustion chamber.

The device is simple and inexpensive in construction, since the various elements may either be made of cast or compressed metal,

and then readily assembled.

What I claim is:-

Air heating device comprising a flat body with a circumferential flange, a second flat body having a circumferential flange of corresponding diameter, and an intermediate body forming a wall or partition between the opposing ends of said flanges, thereby providing a plurality of separated chambers, a corrugated member secured in each chamber, having its oppositely disposed angles in substantially air-tight engagement with the top and bottom of the chamber, thereby forming a series of parallel channels, an air inlet into one channel and an air outlet from another of said channels, the walls of the corrugated members and of the interposed partition being so perforated as to secure a backward and forward flow through alternate channels across the plate in one chamber and a return backward and forward flow in the other chamber to the discharge.

GER-BIT VAN DAAM.

Witnesses:

M. K. BARTON, AGNES ERSKINE.

Copies. of this patentmav be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

